Dissecting X-ray-emitting gas around the center of our galaxy

Q. D. Wang, M. A. Nowak, S. B. Markoff, F. K. Baganoff, S. Nayakshin, F. Yuan, J. Cuadra, J. Davis, J. Dexter, A. C. Fabian, N. Grosso, D. Haggard, J. Houck, L. Ji, Z. Li, J. Neilsen, D. Porquet, F. Ripple, R. V. Shcherbakov

Producción científica: Contribución a una revistaArtículorevisión exhaustiva

238 Citas (Scopus)

Resumen

Most supermassive black holes (SMBHs) are accreting at very low levels and are difficult to distinguish from the galaxy centers where they reside. Our own Galaxy's SMBH provides an instructive exception, and we present a close-up view of its quiescent x-ray emission based on 3 megaseconds of Chandra observations. Although the x-ray emission is elongated and aligns well with a surrounding disk of massive stars, we can rule out a concentration of low-mass coronally active stars as the origin of the emission on the basis of the lack of predicted iron (Fe) Kα emission. The extremely weak hydrogen (H)-like Fe Kα line further suggests the presence of an outflow from the accretion flow onto the SMBH. These results provide important constraints for models of the prevalent radiatively inefficient accretion state.

Idioma originalInglés
Páginas (desde-hasta)981-983
Número de páginas3
PublicaciónScience
Volumen341
N.º6149
DOI
EstadoPublicada - 2013
Publicado de forma externa

Huella

Profundice en los temas de investigación de 'Dissecting X-ray-emitting gas around the center of our galaxy'. En conjunto forman una huella única.

Citar esto